NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 409-948 not yet reported which blocks → SOUTHWESTERN BELL 9533 TXSCYMARQU TX
— 409-949 4XXX which blocks → SOUTHWESTERN BELL 9533 TXSCYMARQU TX
— 409-950 not yet reported which blocks → TX
— 409-951 0XXX9XXX which blocks → SOUTHWESTERN BELL 9533 BEAUMONT TX
— 409-956 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 409-957 not yet reported which blocks → SOUTHWESTERN BELL 9533 XXXXXXXXXX TX
— 409-958 not yet reported which blocks → TX
— 409-959 not yet reported which blocks → TX
— 409-960 none assigned yet which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-962 not yet reported which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-963 not yet reported which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-965 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 TXSCYMARQU TX
— 409-971 0XXX1XXX3XXX6XXX7XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 SABINEPASS TX
— 409-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 409-978 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 HTCHCCKSNF TX
— 409-980 6XXX which blocks → SOUTHWESTERN BELL 9533 BEAUMONT TX
— 409-981 0XXX which blocks → SOUTHWESTERN BELL 9533 BEAUMONT TX
— 409-982 not yet reported which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-983 0XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-984 3XXX4XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-985 not yet reported which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-986 not yet reported which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 HTCHCCKSNF TX
— 409-988 2XXX which blocks → SOUTHWESTERN BELL 9533 ORANGE TX
— 409-989 4XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 PORTARTHUR TX
— 409-994 0XXX6XXX8XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 BUNA TX
— 409-995 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J TXSCYMARQU TX
— 409-996 0XXX2XXX4XXX7XXX8XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 GALVESTON TX
— 409-998 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAUMONT TX
— 410-201 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 410-203 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 ELLICOTTCY MD
— 410-204 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON MARYLAND, INC. 9212 ARBUTUS MD
— 410-205 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
— 410-206 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
— 410-207 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
— 410-208 5XXX7XXX8XXX · 2 holders which blocks → VERIZON MARYLAND, INC. 9212 BERLIN MD
— 410-209 0XXX7XXX9XXX which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 410-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MD
— 410-212 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ANNAPOLIS MD
— 410-213 3XXX4XXX5XXX6XXX · 4 holders which blocks → VERIZON MARYLAND, INC. 9212 OCEAN CITY MD
— 410-215 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
— 410-216 0XXX1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks → VERIZON MARYLAND, INC. 9212 ANNAPOLIS MD
— 410-217 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 410-218 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
— 410-219 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 SALISBURY MD
— 410-221 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 CAMBRIDGE MD
— 410-222 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 SEVERN MD
— 410-223 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 410-224 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 ANNAPOLIS MD
— 410-225 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 410-226 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON MARYLAND, INC. 9212 OXFORD MD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.